1, The mini massager could be used any time and anywhere2. The mini massager can freely slide in the whole body, and arbitrarily massaging any part like back, cheat and leg etc3. The mini massager could help users relax the whole body, ease nervous nerve, promote blood circulation4. The mini massager could be used by middle-aged and the old5. Recommend people who are sufferign from motility muscle strain6. Power supply: 2 *AA batteries or USB7. Package: Color box/PCS, 50PCS/CTN, N. W.: 8kg, G. W.: 9kg, carton size: 52*44*20cm